*{
  margin: 0;
  padding: 0;
}
a{
  text-decoration: none;
}
.loading{
  width: 20px;
  height: 20px;
  border: 2px solid gainsboro;
  border-radius: 50%;
  animation: loading 0.3s infinite linear;
}

@keyframes loading {
  0%{
    transform: rotate(0deg);
  }
  100%{
    transform: rotate(360deg);
  }
}